A tool that lets non software developers manage data-driven tests. I've been in many work situations over the years where the product manager / business stakeholder wants to test something (it could be an API endpoint, or even sometimes just a method or algorithm). From a developer perspective, it's the same code running every time, just with different inputs, and asserting different outputs. From the business side, each test is a different use case that they need to test (and some are more critical than others).

I have just done data-driven tests (i.e. put their inputs/outputs into a data structure and have my testing framework loop through them). But I hate having to sit and copy/paste their inputs/outputs every time they think of a new use case. I'd love a UI driven tool where they can manage all the tests like in a spreadsheet, and when they make updates, my regression tests picks up their tests automatically. Would be nice if it even gave them reports based on what they want to see (e.g. organizing the tests by category, or by severity).